JPH07316560A - Coke-digging machine of coke oven - Google Patents

Abstract

PURPOSE:To mechanize the manually operated coke-digging work of a horizontal chamber coke oven in case of oven clogging or mending of oven wall. CONSTITUTION:A heat-resistant conveyor 5 is extended perpendicular to the length of an oven group on the bottom part of a vehicle 1 freely moving in front of coke ovens along the length of the oven group. A gyration member 6 freely rotatable around a vertical shaft is placed on the vehicle 1. A boom 7 freely rotatable around a horizontal axis is attached to a part of the gyration member 6, an arm 8 is connected to the other end of the boom 7 in a state freely rotatable around a horizontal axis and a bucket 9 is connected to the other end of the arm 8 in a state freely rotatable around a horizontal axis. A scattering prevention plate 17 is placed on the vehicle 1. The dug red-hot coke is safely transferred to a quenching vehicle or a bucket vehicle while preventing the scattering of the coke without necessitating the approach of a worker to the red-hot coke. The worker is relieved from heavy muscular labor and the digging work can be carried out with a small number of workers in a remarkably shortened time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kiln excavator for use in a horizontal chamber furnace type coke oven when it is clogged or when repairing a furnace wall.

[0002]

2. Description of the Related Art The red-hot coke, which has undergone carbonization in a horizontal chamber type coke oven, has a height of 5 to 6 m and a width of 450 m.
m, the length is about 17 m, and it has a block shape of about 10
The temperature is from 00 to 1100 ° C. This red hot coke is the whole block with the ram installed on the extruder applied to the end of the PS side red hot coke after removing the kilns on the extrusion side (hereafter PS side) and the fire engine side (hereafter CS side). Is moved to the CS side and pushed out of the kiln. On the CS side, there is a guide car waiting to guide the red heat coke to the fire engine or bucket car. The red heat coke pushed out of the kiln is dropped onto the fire engine or bucket car via the guide car and extinguished, respectively. Fire extinguishing with water is carried out at the tower, or it is carried to dry fire extinguishing equipment.

However, since the contact resistance between the carbonization chamber wall and the red hot coke increases due to the carbon adhering to the carbonization chamber and the roughening of the carbonization chamber wall, the coke collapses in the kiln,
Frequently and suddenly, it becomes impossible to push the ram out of the kiln with the ram provided in the extruder. At this time, how many meters on the CS side
It is empirically known that if the red hot coke in that range is removed, it will be possible to push it out again with the above ram, and if a kiln jam occurs, a fire extinguisher or After installing a portable conveyor that conveys red hot coke to a coke bucket car, manually push a long rod with a metal hook on the tip of the coke to push it down and push it down, and put the broken coke on the conveyor to remove the coke from the kiln. Have been removed.

[0004]

However, this work is very dangerous because it is not known when the red-hot coke collapses and the coke that has fallen outside the kiln is scattered around. In addition, since the coke in the kiln has a temperature of about 1000 to 1100 ° C., the worker receives radiant heat and is very hot.
Unstable and dangerous heavy-duty work because a heavy rod with a hook metal fitting at the end that is 7 to 8 m long must be operated to break the red-hot coke, so long-term work cannot be performed, and a substitute worker It is necessary to secure a large amount. In addition, it is a typical dangerous work such that water vapor is generated by sprinkling water on the red hot coke on the portable conveyor, which obstructs the visibility and the working environment is bad.

In addition to the clogging of the kiln, damage to the kiln wall of the coke oven is likely to occur in the coke oven, and even when it is determined that repair is required, the same method as when the kiln is clogged within a range of 2 to 3 m from the kiln mouth. The work must be done after removing the red hot coke. This is because it is dangerous to perform repairs after pushing out all the red hot coke in the kiln because the heat load on the operator is very large, and the kiln itself is cooled, which shortens the life of the coke oven.

In order to avoid such a very dangerous work, it is conceivable to use a power shovel as disclosed in Japanese Patent Publication No. 52374/1993. However, in general, power shovels cannot run on the work floor of a coke oven that is narrow and has unevenness.
Since the width is only about m, the movement of the bucket tip cannot be monitored from the driver's seat at a position slightly displaced from the operating direction of the boom or arm because it is blocked by the rim of the kiln. The structure is not able to withstand the work of excavating high-temperature objects such as red hot coke, and the structure of the coke oven must scrape out objects at a position higher than the power shovel body. It is difficult to use a general power shovel because the falling red hot coke must be safely guided and immediately transferred to a safe place having heat resistance.

It is an object of the present invention to mechanize the above-mentioned work which has conventionally been done manually, eliminate dangerous work, and
The purpose of the present invention is to provide a kiln-drilling machine that saves the work of a dozen people to 1-2 people and can do it in a short time.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a coke oven is provided with a heat-resistant conveyor at the bottom of a bogie that can run in front of the furnace in the longitudinal direction of the furnace, in a direction perpendicular to the longitudinal direction of the furnace, and can be rotated around a vertical axis on the bogie. A revolving structure is provided, a boom is provided on a part of the revolving structure so as to be rotatable about a horizontal axis, and an arm is connected to the other end of the boom so as to be rotatable about a horizontal axis, and the other end of the arm is provided. A coke oven kiln boring machine characterized in that a bucket is rotatably connected around a horizontal axis and a shatterproof plate is provided on a bogie.

[0009]

The kiln-digging machine according to the present invention is run to the front of the kiln where the kiln is clogged, and is fixed to the kiln-side so as not to fall or move during the kiln-digging. After that, the anti-scattering plate is moved forward until it hits the kiln opening, the revolving unit is rotated by 90 °, and then the boom and arm are operated to move to the required position of the kiln opening. And
By rotating the bucket, the scrap metal on the bucket tip scrapes the coke and drops it. At this time, since the anti-scattering plates are provided on both sides of the falling red hot coke to prevent the red hot coke from falling, the red hot coke does not fly and safely drops onto the heat-resistant conveyor. Since this heat-resistant conveyor is installed so that it extends from the end of the kiln at the bottom of the trolley to the top of the fire engine or bucket vehicle, the red-hot coke is safely transferred to the fire engine or bucket vehicle, and the heat-resistant fire engine or bucket vehicle It can be placed in a car.

[0010]

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a plan view. Further, FIG. 3 is a diagram showing a state in which coke in a kiln is broken by the kiln moat machine of the present invention and the coke is conveyed to a bucket truck.

In FIG. 1, the alternate long and short dash line indicates the cylinders 13, 14,
The state in which the boom 7, the arm 8 and the bucket 9 are moved by operating 15 is clearly shown. As shown in FIGS. 1 and 2, a traverse device (not shown) for traversing from a standby place to the CS-side work floor 2 under the carriage 1 and a guide rail 3 provided on the CS-side work floor 2 on the furnace. The traveling device 4 that can travel freely in the group direction is provided, and when a kiln is clogged, the kiln excavator can be moved from the standby position to the front of the furnace. The traversing device may not be necessary depending on the arrangement of the coke oven. Further, since the water-cooled heat-resistant conveyor 5 is installed on the carriage 1, the red-hot coke scraped from the kiln can be transferred to the fire extinguisher or bucket car without sprinkling water.

On the trolley 1, a revolving structure 6 for revolving and retracting so that the boom 7 and the arm 8 do not interfere with the coke furnace when the kiln boring machine travels in front of the coking furnace, is provided. A boom 7, an arm 8 and a bucket 9 are provided on the above. The node 10 rotatably connects the revolving structure 6 and the boom 7 around a horizontal axis, the node 11 rotatably connects the boom 7 and an arm 8 around the horizontal axis, and the node 12 is at the arm 8 and the bucket. 9 and 9 are rotatably connected about a horizontal axis.

Cylinder 13 is for driving the boom, cylinder 1
Reference numeral 4 is for arm driving, and cylinder 15 is for bucket driving. The bucket 9 can be brought to an arbitrary position by operating each of the cylinders 13 and 14, and the bucket 9 rotates by operating the cylinder 15, and the scratch metal fitting provided at the tip of the bucket 9 can be carried out. 16
Push the red-hot coke with. The arm 8 and the bucket 9 are made of a metal having heat resistance, for example, SUS material, and the arm 8 has a box-shaped cross section and is cooled by compressed air or the like to ensure heat resistance.

The two anti-scattering plates 17 on the left and right prevent the red-hot coke 18 from scattering when the red-hot coke 18 in the kiln is scraped out, and guide the red-hot coke 18 onto the heat-resistant conveyor 5. The anti-scattering plate 17 has a structure that can be moved in the furnace length direction by a cylinder (not shown) so as not to interfere with the coke oven when the kiln excavator runs in front of the coke oven.

Next, the operation of the kiln boring machine will be described with reference to FIG. When a kiln jam occurs, the kiln moat machine will move from the standby position where the coke oven operation is not affected to the guide rail 3
Is traversed by a traversing device (not shown) provided under the carriage 1. After that, the traveling device 4 travels on the guide vehicle rail 3 in the length direction of the furnace to the target kiln. Then, after fixing the kiln digging machine to the furnace side so that the kiln digging machine does not fall or move during the kiln digging, the shatterproof plate 17 is moved forward until it comes into contact with the kiln mouth, and the revolving structure 6
Rotate 90 °. After operating the cylinders 13 and 14 to drive the boom 7 and the arm 8, the bucket 9 is moved to the upper part of the red hot coke 18 in the kiln, and then the cylinder 15 is operated to rotate the bucket 9 and the scratching metal fitting 16 at the tip. Then, the red hot coke 18 is broken and dropped. The falling red hot coke 18 passes between the two shatterproof plates 17 and rides on the heat-resistant conveyor 5 and moves on the heat-resistant conveyor 5 from right to left in FIG. 1
It is thrown into 9 in the state of red heat. Since the heat-resistant conveyor 5 is in operation during the kiln excavation work, by repeating the operation of moving the boom 7, the arm 8 and the operation of rotating the bucket 9 remotely from a position where the inside of the furnace can be monitored, the red hot coke 18 in the kiln is It is scraped out of the kiln. As a result, the worker does not have to approach the front of the furnace or the falling red hot coke, and can work the kiln very safely.

If the ITV is installed in the kiln-drilling machine and the operation is performed while observing the inside of the kiln with a monitor, the worker can carry out the kiln-drilling work from a safer place.

Further, the boom 7, the arm 8 and the bucket 9 are provided with a spraying repair pipe, and a scratching metal fitting 16 at the tip is provided.
It is also possible to repair the furnace wall 20 from a remote position after excavating the coke in the kiln by replacing the with a nozzle.

In the present embodiment, the work on the CS side is taken as an example, but this kiln moat machine can be used not only on the CS side but also on the PS side.

[0020]

EFFECTS OF THE INVENTION By using the kiln-bending machine of the present invention, it is not necessary to approach the red hot coke, which does not know when it will collapse, and safety is ensured. Then, it is possible to safely transfer the high temperature red hot coke that has been dug out to the fire extinguisher or the bucket car while preventing the scatter of the high temperature red hot coke. Workers are long and do not need to carry heavy rods, are freed from heavy muscle work, and have 10 or more workers, including conventional replacement personnel.
The name is enough and the working time can be greatly reduced. In addition, since it is not necessary to sprinkle water on the conveyor, the visibility is secured and fluctuations in the heat load on the dry fire extinguishing equipment are prevented. Furthermore, because the kiln mouth can be repaired while leaving the red hot coke in the kiln, the kiln is not cooled, and the coke oven life can be extended. INDUSTRIAL APPLICABILITY The kiln excavating machine of the present invention can have a size and shape suitable for the working floor of a coke oven, can be stored in a standby place when not needed, and can be moved quickly from the standby place when necessary, thus hindering the operation of the coke oven. Don't give.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a diagram showing a state in which coke in a kiln is broken by the kiln moat machine of the present invention and the coke is conveyed to a bucket truck.

[Explanation of symbols]

 1 trolley 2 CS working floor 3 Guide rail 4 Traveling device 5 Heat-resistant conveyor 6 Revolving structure 7 Boom 8 Arm 9 Bucket 10 Nodes 11 Nodes 12 Nodes 13 Cylinders 14 Cylinders 15 Cylinders 16 Scratch brackets 17 Scattering plates 18 Red hot coke 19 Buckets Car 20 fire wall

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Eto 1 Nishinosu, Oita-shi, Oita New Nippon Steel Co., Ltd. Oita Works (72) Inventor Nao Yasukouchi 46-59, Nakahara, Tobata-ku, Kitakyushu Nippon Steel Co., Ltd., Machinery & Plant Division (72) Inventor Eiyo Yoshida 46-59, Nakahara, Tobata-ku, Kitakyushu City Nippon Steel Plant Design Co., Ltd. (72) Hiroshi Otani 46-59, Nakahara, Tobata-ku, Kitakyushu City Nittetsu Plant Design Co., Ltd.

Claims (1)

[Claims] 1. A coke oven is provided with a heat-resistant conveyor at the bottom of a bogie that can run in front of the furnace in the longitudinal direction of the furnace, in a direction perpendicular to the longitudinal direction of the furnace, and a revolving structure that is rotatable about a vertical axis is arranged on the bogie.
A boom is provided in a part of the revolving structure so as to be rotatable about a horizontal axis, an arm is connected to the other end of the boom so as to be rotatable about a horizontal axis, and the other end of the arm is rotated about a horizontal axis. A coke oven kiln moat machine characterized by connecting buckets freely and providing a shatterproof plate on the bogie.